Improvement in pumps



E. McCOY & 0. M. HARPER. Rump.

'No. 162,402. Patented April 20, 1875.

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THE GRAPHIC C0.PNOTO-LITH.Z&41 PARK PLAOLN-Y- UNITED STATES PATENT FFIG.

EUGENE MCCOY AND OLIVER M. HARPER, OF OVVATONNA, MINNESOTA.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. [62,402, dated April20, 1875; application filed I December 5, 1874.

To all whom it may concern:

Be it known that we, EUGENE MCCOY and OLIVER M. HARPER, of Owatonna, inthe county of Steele and State of Minnesota, have invented certain newand useful Improvements in Submerged or Force Pumps; and we do herebydeclare that the following is a full, clear, and exact descriptionthereof, which will enable others skilled in the art to which itpertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification, in which the pump in questionis shown in central vertical section.

This invention relates to that class of devices known as submerged orforce pumps, wherein, generally, the cylinder is filled at the top, andis designed to present one simply, compactly, and strongly constructed,and that is at once cheap and durable; and to this end it consists, moreparticularly, first, in fitting to and upon the hollowpiston a slidingconical valve, as and for the purpose hereinafter to be more fullyexplained and set forth; and, secondly, in the special combination andarrangement, in an individual device, of the cylinder, hollow piston,conical sliding valve, elbow, and check valve, all as will now be setout in particular detail.

In the accompanying drawing, A represents the cylinder; A, its base; B,the hollow piston, which is rigidly attached, at b, to the piston-rod B.This piston is fitted in the cylinder in any suitable and effectivemanner. The rod B depends a little below the piston, and has at its endsa button or flange, I), to form a proper seat for the sliding conicalvalve O, through a central aperture in which said rod passes. This valveis made solid'or hollow, as the case may be, and plays freely up anddown the piston-rod, which passes centrally through it. It is conicalupon its upper face, so that when it is driven home upon its seat in theopening in the lower end of the hollow piston, the edges of whichopening are beveled or chamfered off by the action of the water in thedownward motion of the piston, a close and tight joint is formed betweenthe valve and said piston.

The elbow D, to which any suitable or convenient exit pipe 01 tube E maybe attached at the top, is titted in any usual or workmanlike mannerupon the cylinder A, and this is now shown by means of the flange D andscrews 61 passing through said flange and into holes in the boss orprojection A on the lower side of cylinder A. Between the faces of thesetwo parts suitable packing F is applied. Oommunication is provided forbetween cylinder A and elbow D through the opening Gr, now

shown as made centrally through said boss or projection A. Over thisopening is a valve,

H, so attached that it opens outwardly from said cylinder and upwardlyinto the horizontal part d of the elbow D, which is suitably constructedto be adapted for said valve to work in.

From this description the use and operation of our said device may bereadily seen. When the piston is drawn to the top of the cylinder thevalve 6 drops below it upon its seat d on the end of the piston-rod, andthe current of water flows downwardly through the hollow piston into andfills the cylinder. The piston then being forced down, the said valve,on its under side, rises into its seat, and thus makes a part of thepiston, in fact, and by means of the piston so made up the water isdriven through the opening in the lower part of the cylinder into theadjoining elbow, and upward till it finds its escape through the exit.The valve H, opening outwardly from the cyl inder, prevents any backflow of the water into the cylinder when the piston is drawn up, butallows free egress of the water when the piston is being forced down.

This general description indicates the routine of the method and detailof the operation of the device.

Our said device is constructed of any usual or convenient materials,wood or metal, and wholly or partly of the one or the other.

Having thus fully described our said invention, what we desire to secureby Letters Patent is 1. In combination with the cylinder, the hollowpiston having its inner lower edges beveled and the conical valveadapted to slide on a portion of the piston-rod extended through Intestimony that we claim the foregoing as and below said piston,substantially as and for our own we affix our signatures in presence ofthe purpose set forth. two witnesses.

2. The submerged pump hereinbefore described, consisting of cylinder A,piston B B, EUGENE MCCOY. conical sliding valve 0, and elbow D, commu-OLIVER. M. HARPER. nicaring with said cylinder by aperture Gr, providedwith check-"alve H, all constructed and Witnesses: combined in mannerand for the purposes set R. S. HADLEY, forth. L. T. HARPER.

